964 resultados para Agricultural Research Institute (India)
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Appendix: Species of Carabidae and their total catch using pitfall-traps
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Selostus: Suomalaisten viljelymaiden tilan seuranta : muutoksia peltojen ominaisuuksissa aikavälillä 1987-1998
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Selostus: Natriumpitoisuuden pienentäminen lihavalmisteissa korvaamalla natriumfosfaatti kaliumfosfaatilla
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The Iowa Department of Transportation has been using the Bureau of Public Roads (BPR) Roughometer as part of its detour analysis process for more than 20 years. Advances in technology have made the BPR Roughometer obsolete for ride quality testing. High-speed profilers that can collect the profile of the road at highway speeds are the standard ride instruments for determining ride quality on pavements. The objective of the project was to develop a correlation between the BPR Roughometer and the high-speed laser South Dakota type Profiler (SD Profiler). Nineteen pavement sections were chosen to represent the range of types and conditions for detours. Three computer simulation models were tested on the profiler profiles. The first model is the International Ride Index (IRI) which is considered the standard index for reporting ride quality in the United States. The second model is the Ride Number (RN) developed by the University of Michigan Transportation Research Institute and the third model used is a quarter-car simulation of the BPR Roughometer (ASTM E-1170) which should match the speed and range of roadway features experienced by Iowa's BPR Roughometer Unit. The BPR Roughometer quarter-car model provided the best overall correlation with Iowa's BPR Roughometer.
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Selostus: Palkoviljojen ja rypsipuristeiden koostumus, aminohappojen ohutsuolisulavuus sekä rehuarvo sikojen ruokinnassa
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Selostus: Tarhatun soopelin luonne ja lisääntymiskyky
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Selostus: Typen puutteen vaikutus paprikan fotosynteesiin ja kloroplastien rakenteeseen
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Selostus: Ryhmäkoon ja varhaisen käsittelyn vaikutus tarhattujen sinikettujen hyvinvointiin
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Selostus: Kylvötiheyden ja kasvunsääteiden vaikutus kevätrukiin satoon
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Heavy traffic volumes frequently cause distress in asphalt pavements which were designed under accepted design methods and criteria. The distress appears in the form of rutting in the wheel tracks and rippling or shoving in areas where traffic accelerates or decelerates. Apparently accepted stability test methods alone do not always assure the desired service performance of asphaltic pavements under heavy traffic. The Bituminous Research Laboratory, Engineering Research Institute of Iowa State University undertook the development of a laboratory device by which the resistance of an asphalt paving mix to displacement under traffic might be evaluated, and also be used as a supplemental test to determine adequacy of design of the mix by stability procedures.
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A study was undertaken by the Bituminous Research Laboratory of the Engineering Research Institute at Iowa State University, under the sponsorship of the Iowa Highway Research Board, project HR 100, to ascertain the effects of a number of characteristics and properties of asphaltic concrete mixes upon the service behavior of the mixes as evaluated by the Traffic Simulator and by field observations. The study included: Investigations of the relations, of gradation, fraction and resistance to wear of aggregates; of stability, cohesion, per cent voids and asphalt content: of a number of laboratory and field mixes to service behavior as indicated by the Traffic Simulator under various test conditions. Based upon the results of the tests and the relationships noted, tentative criteria for the Traffic Simulator test were devised, subject to verification by observations and measurements of field service behavior of the mixes.
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Selostus: Yrttien ja vihannesten infrapunakuivaus rumpukuivurissa
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Appendix: List of species found in boundaries
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Selostus: Aluskasveja voi käyttää toistuvasti viljan viljelyssä